CN114271868A - Medical alveolar gas collection device and collection method thereof - Google Patents
Medical alveolar gas collection device and collection method thereof Download PDFInfo
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- CN114271868A CN114271868A CN202111590643.2A CN202111590643A CN114271868A CN 114271868 A CN114271868 A CN 114271868A CN 202111590643 A CN202111590643 A CN 202111590643A CN 114271868 A CN114271868 A CN 114271868A
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- 238000000034 method Methods 0.000 title claims description 17
- 238000004891 communication Methods 0.000 claims description 8
- 229910000639 Spring steel Inorganic materials 0.000 claims description 7
- 239000004696 Poly ether ether ketone Substances 0.000 claims description 4
- 229920002530 polyetherether ketone Polymers 0.000 claims description 4
- 229920002620 polyvinyl fluoride Polymers 0.000 claims description 4
- 239000004812 Fluorinated ethylene propylene Substances 0.000 claims description 3
- 239000002033 PVDF binder Substances 0.000 claims description 3
- 239000004813 Perfluoroalkoxy alkane Substances 0.000 claims description 3
- 229920009441 perflouroethylene propylene Polymers 0.000 claims description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 3
- 229920011301 perfluoro alkoxyl alkane Polymers 0.000 claims description 2
- 229920002981 polyvinylidene fluoride Polymers 0.000 claims description 2
- JUPQTSLXMOCDHR-UHFFFAOYSA-N benzene-1,4-diol;bis(4-fluorophenyl)methanone Chemical compound OC1=CC=C(O)C=C1.C1=CC(F)=CC=C1C(=O)C1=CC=C(F)C=C1 JUPQTSLXMOCDHR-UHFFFAOYSA-N 0.000 claims 1
- 238000001514 detection method Methods 0.000 abstract description 9
- 238000012360 testing method Methods 0.000 abstract description 8
- 238000013461 design Methods 0.000 abstract description 4
- 238000007789 sealing Methods 0.000 abstract 2
- 238000007664 blowing Methods 0.000 description 4
- 239000012855 volatile organic compound Substances 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 210000000214 mouth Anatomy 0.000 description 2
- 210000003296 saliva Anatomy 0.000 description 2
- 210000003437 trachea Anatomy 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- HQQADJVZYDDRJT-UHFFFAOYSA-N ethene;prop-1-ene Chemical group C=C.CC=C HQQADJVZYDDRJT-UHFFFAOYSA-N 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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- 238000012545 processing Methods 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
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Abstract
The invention discloses a medical alveolar gas collecting device, which comprises a three-way pipe, and a dead space gas collecting bag and an alveolar gas collecting bag which are communicated with the three-way pipe; the three-way pipe comprises a main pipe, a first branch pipe and a second branch pipe which are respectively communicated with the main pipe; the second branch pipe and the first branch pipe are arranged at intervals and are arranged at the rear end of the main pipe along the air inlet direction; one end of the first branch pipe, which is far away from the main pipe, is communicated with the alveolar gas collection bag in a sealing way through a first valve, and one end of the second branch pipe, which is far away from the main pipe, is communicated with the dead space gas collection bag in a sealing way through a second valve. The invention can collect pure alveolar gas and control the purity of the sample from the source so as to ensure the accurate test of VOCS gas detection in the medical field; meanwhile, the pure physical structure design is adopted, the complexity of sample collection is avoided, and the test cost and time are greatly saved.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the technical field of gas detection, in particular to a medical alveolar gas collecting device and a collecting method thereof.
[ background of the invention ]
At present, a gas collection device is usually used to collect and detect the gas exhaled by a person to be detected in a VOCS (volatile organic compounds) gas detection method for the exhaled gas of a human body. Generally, collecting alveolar gas for detection has the advantage of higher accuracy of detection results than directly collecting exhaled breath. However, in the current process of collecting alveolar gas, dead space gas (i.e. gas in oral cavity and trachea) is easily mixed in the collection process, so that the purity of the sample is insufficient, or the collection process is complicated, so that the gas collection efficiency is low.
In view of the above, it is desirable to provide a medical alveolar gas collecting device and a collecting method thereof to overcome the above-mentioned drawbacks.
[ summary of the invention ]
The invention aims to provide a medical alveolar gas collection device and a collection method thereof, which aim to solve the problem of insufficient sample purity when alveolar gas is collected, improve the accuracy of gas detection, avoid the complexity of sample collection and save the cost and time of testing.
In order to achieve the aim, the invention provides a medical alveolar gas collecting device which comprises a three-way pipe, and a dead space gas collecting bag and an alveolar gas collecting bag which are communicated with the three-way pipe; the three-way pipe comprises a main pipe, a first branch pipe and a second branch pipe which are respectively communicated with the main pipe; the second branch pipe and the first branch pipe are arranged at intervals and are arranged at the rear end of the main pipe along the air inlet direction; one end of the first branch pipe, which is far away from the main pipe, is in closed communication with the alveolar gas collection bag through a first valve, and one end of the second branch pipe, which is far away from the main pipe, is in closed communication with the dead space gas collection bag through a second valve; when the person to be tested continuously blows air into the main pipe, the first valve is closed, the second valve is opened, and front-section air enters the dead cavity air collecting bag; when the pressure in the air path system is overlarge, the first valve is forced to be opened, so that the rear-section gas enters the alveolar gas collection bag.
In a preferred embodiment, the air inlet end of the main pipe is provided with a blowing nozzle.
In a preferred embodiment, the first valve is a spring steel ball valve.
In a preferred embodiment, the second valve is a straight-through valve.
In a preferred embodiment, the first branch pipe and the second branch pipe are both vertically arranged on the main pipe.
In a preferred embodiment, the valve, the tee and the airbag are made of one or more of PEEK, PVF, PVDF, PTFE, FEP and PFA.
The invention also provides a medical alveolar gas collection method, which comprises the following steps:
the first valve is closed, and the second valve is opened, so that the person to be tested continuously blows air from the air inlet end of the main pipe;
the dead space gas collecting bag collects the front-section gas blown by the second branch pipe;
the first valve is opened;
the alveolar gas collection bag collects the post-stage gas of the insufflation through the first branch tube.
In a preferred embodiment, when the first valve is a spring steel ball valve and the second valve is a straight-through valve, the first valve and the second valve do not need to be opened or closed when the person to be tested blows air.
When a person to be tested blows air into the main pipe continuously, the first valve is closed, the second valve is opened, the front-section gas enters the dead space gas collecting bag, and the front-section ineffective gas is filtered; when the pressure in the air path system is overlarge, the first valve is forced to be opened, so that the alveolar gas at the rear section enters the alveolar gas collecting bag, and the collection of the alveolar gas is realized. The invention can collect pure alveolar gas and control the purity of the sample from the source so as to ensure the accurate test of VOCS gas detection in the medical field; meanwhile, the pure physical structure design is adopted, the complexity of sample collection is avoided, and the test cost and time are greatly saved.
[ description of the drawings ]
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic structural view of a medical alveolar gas collection device according to the present invention;
FIG. 2 is a perspective view of a tee in the medical alveolar air collection apparatus of FIG. 1;
FIG. 3 is a schematic diagram of a collection bag of the medical alveolar air collection device of FIG. 1;
FIG. 4 is a flow chart of one embodiment of a medical alveolar gas collection method provided by the present invention.
Reference numbers in the figures: 100. a medical alveolar gas collection device; 10. a three-way pipe; 11. a main pipe; 12. a first branch pipe; 13. a second branch pipe; 14. a blowing nozzle; 20. a dead space gas collection bag; 30. an alveolar gas collection bag; 41. a fixing frame; 42. an air bag; 51. a first valve; 52. a second valve.
[ detailed description ] embodiments
In order to make the objects, technical solutions and advantageous effects of the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and the detailed description. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.
It is also to be understood that the terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the specification of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be further understood that the term "and/or" as used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.
Example one
In an embodiment of the present invention, a medical alveolar gas collection device 100 is provided for collecting alveolar gas of a user to be tested (i.e., residual gas from gas in oral cavity and trachea is removed when the user exhales all the time), so as to ensure purity during gas detection.
As shown in fig. 1-3, the medical alveolar gas collection device 100 includes a three-way pipe 10, and a dead space gas collection bag 20 and an alveolar gas collection bag 30 both communicating with the three-way pipe 10. Wherein, the three-way pipe 10 can be an F-shaped or T-shaped three-way pipe. In the present embodiment, the T-shaped tee includes a main pipe 11 and a first branch pipe 12 and a second branch pipe 13 respectively communicated with the main pipe 11. The second branch pipe 13 is provided at a distance from the first branch pipe 12 and at the rear end of the main pipe 11 in the air intake direction. Further, the first branch pipe 12 is vertically disposed on the main pipe 11, and the second branch pipe 13 is disposed at the end of the main pipe 11 in the air intake direction and coaxially disposed. That is, one end of the main pipe 11 is an air inlet end, and the other end is communicated with an air inlet end of the second branch pipe 13. Further, the air inlet end of the main pipe 11 is provided with a blowing nozzle 14, so that a user to be tested can blow air conveniently, and external air is isolated from entering. Furthermore, the air inlet pipe of the main pipe 11 is trapezoidal, so that the air inlet pipe and the blowing nozzle 14 are matched more closely and conveniently.
The dead space gas collecting bag 20 and the alveolar gas collecting bag 30 are rectangular air bags, and each includes a fixing frame 41 and an air bag 42 provided in the fixing frame 41. Wherein, the front section of gas to be filtered can be controlled by adjusting the volume of the dead space gas collecting bag 20. It should be noted that, in general, the breath gas in the front section of the breath does not need to be detected, so the second branch pipe 13 can be disposed opposite to the mouthpiece 14, and the dead space gas collection bag 20 can prevent the alveolar gas collection bag 30 from collecting excessive moisture and saliva in consideration of introducing more breath moisture or saliva due to respiration.
The end of the first branch pipe 12 remote from the main pipe 11 is in sealed communication with the alveolar gas collection bag 30 through a first valve 51, and the end of the second branch pipe 13 remote from the main pipe 11 is in sealed communication with the dead space gas collection bag 20 through a second valve 52. In this embodiment, the first valve 51 is a spring steel ball valve and the second valve 52 is a straight valve.
In order to avoid the volatility of the valves 51 and 52, the three-way pipe 10 and the air bag 42 from influencing the test of the gas to be detected, the valves 51 and 52, the three-way pipe 10 and the air bag 42 are made of one or more of PEEK (polyether ether ketone), PVF (polyvinyl fluoride), PVDF (polyvinylidene fluoride), PTFE (tetrafluoroethylene), FEP (fluorinated ethylene propylene) and PFA (tetrafluoroethylene-perfluoroalkyl vinyl ether).
The principle of the invention is as follows: when the person to be tested blows air into the main pipe 11 continuously, the first valve 51 is closed and the second valve 52 is opened, so that the front air enters the dead space air collecting bag 20, and non-alveolar air is filtered. The first valve 51 is then opened and the second valve 52 is closed, allowing the back-end gas to enter the alveolar gas collection bag 30, allowing pure alveolar gas to be collected.
Example two
The invention also provides a medical alveolar gas collection method, which is used for collecting pure alveolar gas through the medical alveolar gas collection device 100.
As shown in FIG. 4, the medical alveolar air collection method includes the following steps S101-S104.
In step S101, the first valve 51 is closed and the second valve 52 is opened, so that the person to be tested continuously blows air from the air inlet end of the main pipe 11.
In step S102, the dead space gas collection bag 20 collects the blown front gas through the second branch pipe 13.
In step S103, the first valve 51 is opened.
In step S104, the alveolar gas collection bag 30 collects the latter-stage gas of the insufflation through the first branch tube 12.
Further, in one embodiment, when the first valve 51 is a spring steel ball valve and the second valve 52 is a straight valve, the first valve 51 and the second valve 52 do not need to be opened or closed when the person to be tested blows air.
It should be noted that, in this embodiment, when a person blows into the main pipe 11, the gas quickly passes through the joint of the first branch pipe 12 and the main pipe 11, according to the communicating device principle of bernoulli equation, the fluid speed is high, the pressure is low, and the front-stage gas blown at this time enters the dead space gas collecting bag 20 through the second branch pipe 13 and the straight-through valve 51. As the gas collected by the dead space gas collection bag 20 increases, the gas pressure in the bag increases, the through valve 51 closes, and the latter gas then passes through the first branch 12 into the alveolar gas collection bag 30. Due to the one-way conduction capability of the spring steel ball valve 52, the alveolar gas can only enter the alveolar gas collection bag 30, and the function of automatically collecting the alveolar gas is realized. Therefore, the embodiment meets the requirement of supplying gas to the two collecting bags simultaneously, realizes automatic gas diversion and further realizes the automatic screening of the alveolar gas.
In summary, according to the medical alveolar gas collection device 100 and the method for using the same provided by the present invention, when the person to be tested blows air into the main pipe 11 continuously, the first valve 51 is closed and the second valve 52 is opened, so that the front-stage gas enters the dead space gas collection bag 20, and the front-stage ineffective gas is filtered; the first valve 51 is then opened and the second valve 52 is closed, allowing the alveolar gas of the latter stage to enter the alveolar gas collection bag 30, and achieving collection of the alveolar gas. The invention can collect pure alveolar gas and control the purity of the sample from the source so as to ensure the accurate test of VOCS gas detection in the medical field; meanwhile, the pure physical structure design is adopted, the complexity of sample collection is avoided, and the test cost and time are greatly saved.
In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to the related descriptions of other embodiments for parts that are not described or illustrated in a certain embodiment.
Those of ordinary skill in the art will appreciate that the various illustrative elements and method steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
In the embodiments provided in the present invention, it should be understood that the disclosed system or apparatus/terminal device and method can be implemented in other ways. For example, the above-described system or apparatus/terminal device embodiments are merely illustrative, and for example, the division of the modules or units is only one logical division, and there may be other divisions when actually implemented, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The invention is not limited solely to that described in the specification and embodiments, and additional advantages and modifications will readily occur to those skilled in the art, so that the invention is not limited to the specific details, representative apparatus, and illustrative examples shown and described herein, without departing from the spirit and scope of the general concept as defined by the appended claims and their equivalents.
Claims (8)
1. A medical alveolar gas collection device is characterized by comprising a three-way pipe, and a dead space gas collection bag and an alveolar gas collection bag which are communicated with the three-way pipe; the three-way pipe comprises a main pipe, a first branch pipe and a second branch pipe which are respectively communicated with the main pipe; the second branch pipe and the first branch pipe are arranged at intervals and are arranged at the rear end of the main pipe along the air inlet direction; one end of the first branch pipe, which is far away from the main pipe, is in closed communication with the alveolar gas collection bag through a first valve, and one end of the second branch pipe, which is far away from the main pipe, is in closed communication with the dead space gas collection bag through a second valve; when the person to be tested continuously blows air into the main pipe, the first valve is closed, and the second valve is opened, so that the front-section gas enters the dead space gas collecting bag; the first valve is then opened and the second valve closed, allowing the back-end gas to enter the alveolar gas collection bag.
2. The medical alveolar gas collection device of claim 1, wherein the air inlet end of the main tube is provided with a mouthpiece.
3. The medical alveolar gas collection device of claim 1, wherein the first valve is a spring steel ball valve.
4. The medical alveolar gas collection device of claim 1, wherein the second valve is an in-line valve.
5. The medical alveolar gas collection device of claim 1, wherein the first branch tube and the second branch tube are both vertically disposed on the main tube.
6. The medical alveolar gas collection device according to claim 1, wherein the valve, the tee and the airbag are made of one or more of PEEK, PVF, PVDF, PTFE, FEP and PFA.
7. A medical alveolar gas collection method is characterized by comprising the following steps:
closing the first valve and opening the second valve to enable the person to be tested to continuously blow air from the air inlet end of the main pipe;
the dead space gas collecting bag collects the front-section gas blown by the second branch pipe;
opening the first valve;
the alveolar gas collection bag collects the post-stage gas of the insufflation through the first branch tube.
8. The medical alveolar gas collection method according to claim 6, wherein when the first valve is a spring steel ball valve and the second valve is a straight-through valve, the first valve and the second valve do not need to be opened or closed when the person to be tested blows air.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111590643.2A CN114271868A (en) | 2021-12-23 | 2021-12-23 | Medical alveolar gas collection device and collection method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111590643.2A CN114271868A (en) | 2021-12-23 | 2021-12-23 | Medical alveolar gas collection device and collection method thereof |
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| Publication Number | Publication Date |
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| CN114271868A true CN114271868A (en) | 2022-04-05 |
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| CN202111590643.2A Pending CN114271868A (en) | 2021-12-23 | 2021-12-23 | Medical alveolar gas collection device and collection method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116784888A (en) * | 2023-08-28 | 2023-09-22 | 成都艾立本科技有限公司 | Off-line type expired gas collector |
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| CN203619595U (en) * | 2013-12-12 | 2014-06-04 | 丁文京 | Exhalation test gas collecting device |
| JP2015014552A (en) * | 2013-07-08 | 2015-01-22 | 株式会社呼気生化学栄養代謝研究所 | Terminal breathing collection device |
| EP3032254A1 (en) * | 2014-12-12 | 2016-06-15 | Valstybinis moksliniu tyrimu institutas Fiziniu ir technologijos mokslu centras | Method and device for detection of elemental gaseous mercury in air or in other gases |
| CN205981805U (en) * | 2016-08-18 | 2017-02-22 | 深圳市先亚生物科技有限公司 | A device for gathering exhale and help its trace composition measurement |
| CN209559579U (en) * | 2018-12-17 | 2019-10-29 | 北京华亘安邦科技有限公司 | Exhaled gas separating device and breathed air acquisition device |
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2021
- 2021-12-23 CN CN202111590643.2A patent/CN114271868A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015014552A (en) * | 2013-07-08 | 2015-01-22 | 株式会社呼気生化学栄養代謝研究所 | Terminal breathing collection device |
| CN203619595U (en) * | 2013-12-12 | 2014-06-04 | 丁文京 | Exhalation test gas collecting device |
| EP3032254A1 (en) * | 2014-12-12 | 2016-06-15 | Valstybinis moksliniu tyrimu institutas Fiziniu ir technologijos mokslu centras | Method and device for detection of elemental gaseous mercury in air or in other gases |
| CN205981805U (en) * | 2016-08-18 | 2017-02-22 | 深圳市先亚生物科技有限公司 | A device for gathering exhale and help its trace composition measurement |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116784888A (en) * | 2023-08-28 | 2023-09-22 | 成都艾立本科技有限公司 | Off-line type expired gas collector |
| CN116784888B (en) * | 2023-08-28 | 2023-10-24 | 成都艾立本科技有限公司 | Off-line type expired gas collector |
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